2 years ago

I NEED HELP WITH A PROBLEM

Mathematics

1 answer:

postnew [5]2 years ago

6 0

Answer:

the first one I guess

Step-by-step explanation:

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Help please I’m trying to do my homework and don’t understand

11Alexandr11 [23.1K]

Answer:

Answer is 9.

I think this is helpful. Vote it and like me

6 0

2 years ago

Given that y= 12 cm and θ= 24 °, work out x rounded to 1 DP.<br><br> (not drawn to scale.)

padilas [110]

Answer:

$\huge\boxed{\sf x = 5.3}$

Step-by-step explanation:

<h3><u>Given:</u></h3>

y = 12 cm

θ = 24°

Using trigonometric ratio, tan.

$\displaystyle \boxed{tan \theta = \frac{opposite}{adjacent} }\\\\tan \ 24 = \frac{x}{12} \\\\0.445 = \frac{x}{12} \\\\Multiply \ 12 \ to \ both \ sides\\\\0.445 \times 12 = x\\\\5.3 = x\\\\x = 5.3\\\\\rule[225]{225}{2}$

5 0

1 year ago

I need the answer and work

ad-work [718]

A) 2x +3

Plug in the x

2(4.1) + 3

8.2+ 3= 11.2

A is 11.2

B) 16-5y

Plug in the y

16 - 5(2.3)

16- 11.5= 4.5

B is 4.5

C) x+y

Plug in x and y

4.1 + 2.3= 6.4

C is 6.4

7 0

2 years ago

Prove that if b is a square matrix then b+b^t is symmetric

WARRIOR [948]

A matrix $\mathbf X$ is symmetric if $\mathbf X=\mathbf X^\top$ . We have

$(\mathbf B+\mathbf B^\top)^\top=\mathbf B^\top+(\mathbf B^\top)^\top=\mathbf B^\top+\mathbf B=\mathbf B+\mathbf B^\top$

and so $\mathbf B+\mathbf B^\top$ is indeed symmetric.

6 0

2 years ago

Wut is duh mass ov mai 20 lbz book

morpeh [17]

The mass is 15 and can you speak english.

3 0

3 years ago

I NEED HELP WITH A PROBLEM ​

I NEED HELP WITH A PROBLEM